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Entanglement transport and a nanophotonic interface for atoms in optical tweezers

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posted on 2023-01-11, 22:46 authored by Tamara Đorđević, Polnop Samutpraphoot, Paloma L. Ocola, Hannes Bernien, Brandon Grinkemeyer, Ivana Dimitrova, Vladan Vuletić, Mikhail D. Lukin
The realization of an efficient quantum optical interface for multi-qubit systems is an outstanding challenge in science and engineering. Using two atoms in individually-controlled optical tweezers coupled to a nanofabricated photonic crystal cavity, we demonstrate entanglement generation, fast non-destructive readout, and full quantum control of atomic qubits. The entangled state is verified in free space after being transported away from the cavity by encoding the qubits into long-lived states and using dynamical decoupling. Our approach bridges quantum operations at an optical link and in free space with a coherent one-way transport, potentially enabling an integrated optical interface for atomic quantum processors.



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